[root@localhost devel]# make -C /usr/src/kernels/2.6.18-1.2239.fc5-ppc  M='pwd' modules
make: Entering directory `/usr/src/kernels/2.6.18-1.2239.fc5-ppc'
scripts/Makefile.build:17: /usr/src/kernels/2.6.18-1.2239.fc5-ppc/pwd/Makefile: No such file or directory
make[1]: *** No rule to make target `/usr/src/kernels/2.6.18-1.2239.fc5-ppc/pwd/Makefile'.  Stop.
make: *** [_module_pwd] Error 2
make: Leaving directory `/usr/src/kernels/2.6.18-1.2239.fc5-ppc'